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Armina cf. comta can be distinguished from other arminaceans by the papillae on the oral veil. It is characterized by a black body with whitish/yellow longitudinal lines and a diffuse tranverse black patch in the posterior third of the body. The papillae on the oral veil, the margin of the mantle and the margin of the foot are also whitish/yellow. The rhinophores are black with whitish/yellow apices.
A similar specimen from Port Stephens, Australia was identified by Kathe Jensen in 2005 on the Sea Slug Forum, as Armina papillata Baba, 1933 with the comment:
"Other species with papillae are A. gracilis (Bergh, 1874), A. lugubris (Bergh, 1874), A. petersi (Bergh, 1866) and A. comta (Bergh, 1880). The number of papillae on the head differ in these species, and also the number of lateral lamellae (on the ventral surface of the mantle skirt)."
This species was posted on 9 February 2011 at these website as Armina cf. comta, Dr. Richard C. Willan wrote on 16 October 2014:
"I recommend you call it Armina papillata and you ignore Armina cf. comta." I changed it on 17 October 2014 into Armina papillata Baba, 1933.
I found on 20 June 2017 pictures of Armina comta at the internet, on a trusted website: https://seaslug.world/, I cant tell for sure the difference of the above specimen #1 to them, so I moved it on 21 June 2017 back to Armina cf. comta.
This species is still as Armina sp. 9 on Bill Rudman's Sea Slug Forum
How to cite:
Köhler, E. (2017), published 14 November 2017, Armina cf. comta (Bergh, 1876)
available from https://www.Philippine-Sea-Slugs.com/Nudibranchia/Cladobranchia/Armina_comta_cf.htm